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- DictionaryLife span
noun
- 1. the length of time for which a person or animal lives or a thing functions: "the human life span"
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Life span, the period of time between the birth and death of an organism. The maximum life span is a theoretical number whose exact value cannot be determined from existing knowledge about an organism; it is often given as a rough estimate based on the longest-lived organism of its species known to date.
Oct 6, 2022 · The human lifespan is the maximum number of years an individual from the human species can live based on observed examples. Though this definition of lifespan may seem simple enough, it is often confused with other common concepts in the study of the aging, life, and death of living organisms.
Life span definition: the longest period over which the life of any organism or species may extend, according to the available biological knowledge concerning it.. See examples of LIFE SPAN used in a sentence.
In 2021, the global average life expectancy was just over 70 years. This is an astonishing fact – because just two hundred years ago, it was less than half. This was the case for all world regions: in 1800, no region had a life expectancy higher than 40 years. The average life expectancy has risen steadily and significantly across all regions. 1.
1 day ago · 1. variable noun [oft with poss] The lifespan of a person, animal, or plant is the period of time for which they live or are normally expected to live. A 15-year lifespan is not uncommon for a dog. They have extended the potential life span of humanity everywhere. 2. countable noun [oft with poss]
: the amount of time that a person or animal actually lives. the average life span of house cats. increase/lengthen the human life span. — often used figuratively. Recharging can extend the life span of a battery. the life span of a building/appliance. the life span of a controversy.